AGB GEAR TRAIN TURNS UNEVENLY (BINDS) WHEN TURNED BY HAND AND RUBBING OR BINDING IS FELT WHEN TUBEAXIAL FAN BLADES OR LEFT COOLING FAN BLADES ARE TURNED BY HAND-continued

TM 9-2835-255-34

3-2. TROUBLESHOOTING - CONTINUED

a. ACCESSORY GEARBOX (AGB) AND

(2)

ES-2. AGB GEAR TRAIN TURNS

UNEVENLY (BINDS) WHEN TURNED BY

HIGH PRESSURE COMPRESSOR -

HAND AND RUBBING OR BINDING IS

CONTINUED

FELT WHEN TUBEAXIAL FAN BLADES

OR LEFT COOLING FAN BLADES ARE

TURNED BY HAND. - CONTINUED

CONTINUED FROM STEP 8

Check rotation of power turbine

in rear engine subassembly (1)

by turning shouldered shaft (2)

clockwise. Shaft should turn

smoothly and no unusual noises

should be heard.

Does shaft turn smoothly with no

unusual noises?

YES

A. Inspect splined coupling (3)

for evidence of damage. If

damaged, replace number

12 bearing and splined

B. Replace number 10 bearing

C. Install AGB (page 7-22).

D. Verify problem is solved.

A. Replace engine assembly

(TM34-1).

B. Verify problem is solved.

END OF TASK

3-27

Change 6